refactor(ui): centralize compact icon button sizing in EMCN

.claude/rules/emcn-components.md

@@ -6,14 +6,14 @@ paths:
 
 # EMCN Components
 
-Import components, `cn`, and tokens from the `@sim/emcn` barrel; icons come from the `@sim/emcn/icons` subpath, and CSS modules from their file path. Never deep-import other component subpaths. The **chip family** is the platform's primary chrome — always reach for it over the legacy primitives it is progressively replacing (`Input`→`ChipInput`, `Textarea`→`ChipTextarea`, `Modal`→`ChipModal`, `Select`/`Combobox`→`ChipSelect`/`ChipCombobox`/`ChipDropdown`, `Switch`→`ChipSwitch`, date field→`ChipDatePicker`). For context/action menus the canonical control is `DropdownMenu` — the standard menu (not a chip, and never a hand-rolled popover).
+Import components, `cn`, and tokens from the `@sim/emcn` barrel; icons come from the `@sim/emcn/icons` subpath, and CSS modules from their file path. Never deep-import other component subpaths. The **chip family** is the platform's primary chrome — always reach for it over the legacy primitives it is progressively replacing (`Input`→`ChipInput`, `Textarea`→`ChipTextarea`, `Modal`→`ChipModal`, `Select`/`Combobox`→`ChipSelect`/`ChipCombobox`, `Switch`→`ChipSwitch`, date field→`ChipDatePicker`). For context/action menus the canonical control is `DropdownMenu` — the standard menu (not a chip, and never a hand-rolled popover).
 
 ## Chip chrome — single source of truth
 
 Never hand-roll the chip pill from raw class strings (they go stale). Compose from the canonical sources:
 
 - **Surface, typography + content tokens:** `chip/chip-chrome.ts` — `chipFilledSurfaceTokens`, `chipFieldSurfaceClass`, `chipFieldTextClass` (text fields and the dropdown search box build on these), plus the chip-content chrome `chipContentGap`, `chipGeometryClass`, `chipContentIconClass`, `chipContentLabelClass`, `cellIconNodeClass` (non-chip surfaces that must visually match chip content, e.g. resource table cells), and the row-state pair `chipHoverSurfaceClass` / `chipActiveSurfaceClass` (hover vs. selected — mutually exclusive, so a selected row holds its surface through hover; every hand-rolled row imports these rather than restating the literals). All are re-exported from the `@sim/emcn` barrel — no subpath import needed.
-- **Pill geometry:** `chip/chip.tsx` — `chipVariants` (30px tall, `rounded-lg`, `px-2`, icon↔text `gap-1.5`). Every pill-shaped trigger (`ChipDropdown`, `ChipSelect`, `ChipSwitch`) reuses it for visual parity.
+- **Pill geometry:** `chip/chip.tsx` — `chipVariants` (30px tall, `rounded-lg`, `px-2`, icon↔text `gap-1.5`). Every pill-shaped trigger (`ChipSelect`, `ChipDatePicker`) reuses it for visual parity.
 
 Canonical look: normal font-weight (never `font-medium`/`font-semibold`), value text `--text-body`, icons `--text-icon` at `size-[14px]`, placeholder `--text-muted`, `transition-colors`, **no focus ring** (the caret marks focus). Filled surface is `--surface-5` light / `--surface-4` dark with a `--border` border (`chip-chrome.ts` still spells it through the legacy alias `--border-1`; new code writes `--border`).
 
@@ -24,15 +24,15 @@ The menu surface intentionally diverges from the pill: `dropdown-menu.tsx` items
 - **`Chip` / `ChipLink`** — the pill button (`<button>` / Next `<Link>`). Variants: `primary`, `destructive`, `border-shadow`, `border`, `outline` (a true `--border` border, no shadow or hover fill); the bare chip is implicit (omit `variant`). `filled` is deliberately NOT a `Chip` variant — it is reserved for chip fields/triggers. For a selected/toggle chip use the `active` prop, never a variant. `leftIcon`/`rightIcon`, `active`, `fullWidth`. Chips carry **no outer margin** — space between them is the parent's `gap`, so never give a chip a margin, by default or through `className`.
 - **`ChipInput`** — single-line text field. `icon`, `endAdornment`, `error`, `inputClassName` (inner `<input>`); `className` styles the chrome wrapper.
 - **`ChipCopyInput`** — the canonical view-only field: a read-only `ChipInput` at full opacity with a trailing copy-to-clipboard button. View-only is a display mode, not a disabled state — reach for it (or `ChipModalField type='copy'`) over a `disabled` (greyed) input for values the user cannot edit.
-- **`ChipTextarea`** — multi-line sibling. `error`, `resizable` (off by default), `viewOnly` (read-only at full opacity with the default cursor — the multi-line counterpart of `ChipCopyInput`).
-- **`ChipDropdown`** — pill that opens a menu. Single OR multi-select via the discriminated `multiple` prop (one component, not two). Owns its trailing chevron — no `rightIcon`.
-- **`ChipSelect` / `ChipCombobox`** — `Combobox`-backed pickers with search, groups, multi-select; for richer lists than `ChipDropdown`.
-- **`ChipModal` + `ChipModalField`** — declarative compact modal. The field's `type` (`input` | `email` | `textarea` | `dropdown` | `copy` | `file` | `emails` | `custom`) picks the control and **owns all chrome** — consumers describe intent, never pass `variant`/`className`/`id` to the inner control. `custom` (with a `title`) is the escape hatch for controls the field doesn't cover. Every body field is a `ChipModalField`; the gutter rhythm that makes this matter is in `sim-styling.md` → "Form / chip-modal layout rhythm".
-- **`ChipSwitch`** — segmented pill control (built from `chipVariants`).
+- **`ChipTextarea`** — multi-line sibling. `monospace` for structured text, `error`, `resizable` (off by default), `viewOnly` (read-only at full opacity with the default cursor — the multi-line counterpart of `ChipCopyInput`).
+- **`ChipSelect`** — canonical menu selection. Single selection uses `value`/`onChange`; `multiSelect` uses `multiSelectValues`/`onMultiSelectChange`, checkbox rows, and stays open. Supports groups, search aliases, rich labels/icons, disabled options, optional single-selection checks, and trigger refs. Rich labels require a nonempty `searchTerms` array containing their visible text, followed by any aliases; plain string/number labels are searchable automatically. `showAllOption` clears to an empty selection; without it, use `placeholder` for the empty state. Owns its chevron. `dropdownWidth` accepts `'trigger'`, `'content'`, or pixels; `modal={false}` keeps outside-dialog filters non-modal, while nested dialogs retain their focus lock.
+- **`ChipCombobox`** — shared chip styling over the separate `Combobox` engine for editable values, asynchronous results, and virtualized lists. Plain menu selection, including searchable menus, uses `ChipSelect`.
+- **`ChipModal` + `ChipModalField`** — declarative compact modal. `orientation='horizontal'` places a field title beside its control, wraps on narrow surfaces, and keeps error/hint text below the row; vertical is the default. The field's `type` (`input` | `email` | `textarea` | `dropdown` | `copy` | `file` | `emails` | `custom`) picks the control and **owns all chrome** — consumers describe intent, never pass `variant`/`className`/`id` to the inner control. `custom` (with a `title`) is the escape hatch for controls the field doesn't cover. Every body field is a `ChipModalField`; the gutter rhythm that makes this matter is in `sim-styling.md` → "Form / chip-modal layout rhythm".
+- **`ChipButtonGroup` / `ChipSwitch`** — one Radix radio-group implementation with zero-gap segments and `default`/`compact` density. `ChipButtonGroup` accepts compound children; `ChipSwitch` adapts an options array.
 - **`ChipTag`** — 20px inline tag/badge (`mono`/`gray`/`invite`), not a pill trigger.
 - **`ChipDatePicker`** — chip-styled date field.
 - **`ChipTimePicker`** — minute-granular time sibling of `ChipDatePicker`, a `ChipInput` that leniently parses typed input (`9:47`, `947`, `2:05pm`, `14:30`), commits on Enter/blur, and re-renders the canonical `9:47 AM` label.
-- **`DropdownMenu`** — the canonical context/action menu (Radix-backed). Not a chip, but the standard menu for command/action lists; reach for it instead of a hand-rolled popover. Its surface intentionally diverges from the chip pill (`text-small`, `gap-2`) — keep them distinct. For a pill that opens a value picker, use `ChipDropdown`/`ChipSelect` instead.
+- **`DropdownMenu`** — the canonical context/action menu (Radix-backed). Not a chip, but the standard menu for command/action lists; reach for it instead of a hand-rolled popover. Its surface intentionally diverges from the chip pill (`text-small`, `gap-2`) — keep them distinct. For a pill that opens a value picker, use `ChipSelect` instead.
 - **`useScrollEdges` + `scrollFadeClass` / `scrollFadeAttributes`** — the canonical scroll-region edge treatment. The hook reports which edges hide content (tracking scroll and resizes; pass the element itself, held in state, when the region mounts after its owner, e.g. inside a Radix portal); the class and attributes fade a fixed 12px band at an active edge only, so a list that fits or sits at its top is never fogged. A floating control over the top edge sets `--scroll-fade-inset` to its height. A region that scrolls sideways (a tab row, a chip strip) uses `useScrollEdges(ref, { axis: 'x' })` with `scrollFadeXClass`; the attributes helper is shared. Any divider beside the region belongs to the neighboring block (`border-b` above, `border-t` below), never to the masked element, and shows only while that edge is active. Never hand-roll a `mask-image` gradient for a scroll region.
 - **`OverflowText`** — the canonical single-line overflow treatment for read-only human labels and titles. It owns `min-w-0`, fade-only clipping (never an ellipsis), the conditional 18px edge mask, and the full-value floating tooltip; consumers pass only layout/typography through `className`. `overflowTextClipClass` and `overflowTextFadeClass` are the complete base/faded treatments for the rare component that must own measurement itself; never pair either with `truncate`, `text-ellipsis`, or hover-time mask removal. Use `DropdownMenuItemLabel` for a menu label beside icons, checks, or actions. A non-editable `Combobox` passes the full visual value through `overlayLabel`; the combobox owns the visual overlay's fade and keeps its one accessible tooltip on the interactive layer. Keep ordinary `truncate` only for editable values, code/log/path content, dense or virtualized grids, and rich composite content that cannot supply a plain tooltip label. Multiline copy uses an intentional `line-clamp-*` treatment instead.
 
@@ -51,9 +51,27 @@ Declare keyboard intent on the action-owning primitive; never add document-level
 - **One source of truth for shared chrome.** Compose from `chip-chrome.ts` / `chipVariants`; never duplicate the chrome string.
 - **Props over `className` overrides.** When a consumer needs to change chrome, expose a prop (`error`, `icon`, `endAdornment`, `inputClassName`); reaching for `className` to restyle chrome is the smell.
 - **`cn()` for a single state toggle, CVA for genuine multiple variants.** A lone `error` boolean is `cn()`, not a CVA variant.
-- **Discriminated-union props for modes** (e.g. `multiple`, the modal field `type`) instead of near-duplicate components.
+- **Discriminated-union props for modes** (e.g. `multiSelect`, the modal field `type`) instead of near-duplicate components.
 - **Delete legacy variants after migration** — leave no dead paths.
 - **Verify CSS vars exist.** An undefined var resolves to `currentColor`, which draws black borders. Align to the canonical tokens: normal weight, `--text-body`, `--text-icon`.
 - Use Radix UI primitives for accessibility. Export the component and its `variants` (when using CVA). Document with TSDoc + a usage example.
 
 Color tokens and icon-size conventions are canonical in `.claude/rules/sim-styling.md` — follow it rather than restating.
+
+
+## Ordinary Button action geometry
+
+`Button` retains its existing appearance variants. For square actions use `iconSize`:
+`compact` (24px on the spacing scale), `compact-fixed` (24px), `regular` (28px),
+`roomy` (32px), or `touch` (40px). These values follow the root spacing scale;
+only `compact-fixed` stays fixed when root text is enlarged.
+Use `{ base: 'touch', sm: 'regular' }` for mobile/desktop targets. These props own
+geometry only; colour, radius and SVG stroke continue to come from the selected
+`variant` and `size`. `iconPadding` explicitly overrides the zero-padding geometry.
+Use `shape='round'` for circular actions, or omit it to retain the current radius.
+`size='inline'` is a 20px-high action with caption typography and compact horizontal
+padding. Prefer these supported props to size, padding and radius overrides.
+
+### Chip sizing and centered actions
+
+`Chip`, `ChipLink`, and `ChipInput` retain their default 30px height. Use `size="lg"` for the existing auth-scale 36px controls; the larger size follows the root font size. `Chip` and `ChipLink` accept `align="center"` to center their icon/label group, including full-width form actions. Long labels still shrink and retain their overflow treatment. Avoid descendant flex overrides to center chip labels. The default geometry exports remain unchanged for static consumers.

.claude/rules/sim-styling.md

@@ -48,7 +48,11 @@ setWidth: (width) => {
 
 ## Text Scale
 
-The `@theme` block in `apps/sim/app/_styles/globals.css`: `text-micro` 10px, `text-xs` 11px, `text-caption` 12px, `text-small` 13px, `text-sm` 14px (Tailwind default), `text-base` 15px, `text-md` 16px, `text-lg` 18px (Tailwind default). `text-xs` is 11px here, so a caption written as `text-xs` is a pixel short. Field titles use `text-small`; hints/errors use `text-caption`. A literal `text-[Npx]` is either a rename to the matching token or an unmigrated straggler.
+Use the named scale in `apps/sim/app/_styles/globals.css`: `text-micro`=10px, `text-xs`=11px, `text-caption`=12px, `text-small`=13px, `text-base`=15px, `text-md`=16px, `text-title`=28px, `text-title-lg`=32px, and `text-display`=40px. The explicitly adopted stock entries retain their rem units and default leading: `text-sm`=0.875rem, `text-lg`=1.125rem, `text-xl`=1.25rem, and `text-2xl`=1.5rem (14/18/20/24px at the default root size). Field titles use `text-small`; hints/errors use `text-caption`; workflow titles use `text-md`.
+
+Preserve explicit line heights when replacing arbitrary sizes. Where the old size inherited its line height, use `leading-[inherit]` if the named utility would otherwise add a different default. Keep document-relative heading/code recipes and the thinking loader's proportional label sizing distinct from ordinary UI text.
+
+Use `font-inter` within the existing scoped Inter loading boundary; the utility does not load the font globally. Keep monospace for code, JSON, and credentials.
 
 Icons default `size-[14px]`. Equal h/w → `size-*` (`size-[14px]`, `size-4`), never `h-N w-N` or `h-[Npx] w-[Npx]`.
 
@@ -68,7 +72,7 @@ A scroll region that can hide rows past an edge uses `useScrollEdges` with `scro
 
 ## Font Weight
 
-Three steps, Tailwind's stock scale, nothing else: **`font-normal` (400)**, **`font-medium` (500)**, **`font-semibold` (600)**. 400 is the document default, so body text, chip labels, sidebar items, and headings carry **no weight class at all** — they inherit. Reach for a class only to step *up* from body.
+Three steps, explicitly adopted from Tailwind's stock scale in globals.css, nothing else: **`font-normal` (400)**, **`font-medium` (500)**, **`font-semibold` (600)**. 400 is the document default, so body text, chip labels, sidebar items, and headings carry **no weight class at all** — they inherit. Reach for a class to step *up* from body or to reset meaningful inherited weight. Raw CSS references the same `--font-weight-normal`, `--font-weight-medium`, and `--font-weight-semibold` definitions; their values remain 400/500/600.
 
 Never write an arbitrary weight (`font-[380]`, `font-[450]`, …) or a `--font-weight-*` variable, and never set `fontWeight` in an inline `style`: values clustered between the three steps do not read as hierarchy. Off-scale values are acceptable only where the design system cannot reach — react-email templates and the static `apps/sim/emails/broadcasts/*.html`, which email clients render without CSS variables.